51506102 has 4 divisors (see below), whose sum is σ = 77259156. Its totient is φ = 25753050.

The previous prime is 51506101. The next prime is 51506111. The reversal of 51506102 is 20160515.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51506101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12876524 + ... + 12876527.

It is an arithmetic number, because the mean of its divisors is an integer number (19314789).

Almost surely, 2^51506102 is an apocalyptic number.

51506102 is a deficient number, since it is larger than the sum of its proper divisors (25753054).

51506102 is a wasteful number, since it uses less digits than its factorization.

51506102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25753053.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51506102 is about 7176.7751810963. The cubic root of 51506102 is about 372.0656366627.

Adding to 51506102 its reverse (20160515), we get a palindrome (71666617).

The spelling of 51506102 in words is "fifty-one million, five hundred six thousand, one hundred two".